Dual desk unit



FIG. 1 is a top, front and right side perspective view of a dual desk unit, showing my new design;

FIG. 2 is a top, front and left side perspective view thereof, with two of the drawers in open position;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is an end elevational view taken from the left of FIG. 1; and

FIG. 5 is an end elevational view taken from the right of FIG. 1. 

The ornamental design for dual desk unit, as shown and described. 